Reductions in quality of life and increased economic burden associated with mental disorders in an Australian adult sample

Abstract

Objective The aim of this study was to determine the effect of a broad range of common mental disorders and their comorbidity on health-related quality of life and functional disability.

Methods In all, 2734 Australians aged ≥18 years, recruited from the general community via Facebook during August–December 2014, completed an online survey assessing demographic characteristics, nine mental disorders, suicidal ideation and attempt. Outcome measures were health-related quality of life (assessed using the Assessment of Quality of Life (AQoL)-4D measure and functional disability (days out of role).

Results Overall, 53.1% of the sample met criteria for at least one mental disorder. Participants with each of the 11 mental health problems had significantly lower mean AQoL-4D scores and significantly greater functional disability compared with not having the disorder (P < 0.001). A monotonic decrease in quality of life and an increase in functional disability were observed with an increased total number of comorbid disorders (P < 0.001). Accounting for disorder prevalence, annual economic burden for each mental disorder was estimated to be in the range of A$870 million–A$17 billion.

Conclusions Mental disorders negatively affect health-related quality of life and functional disability, exacerbated by increased comorbidity. The economic burden to participants and employers estimated in this study is of concern, and highlights the importance of evidence-based treatment and prevention approaches. Show more